# ISO 6926:1990 — Withdrawn and superseded ISO standards For ISO 6926:1990, item title is Acoustics — Determination of sound power levels of noise sources — Requirements for the performance and calibration of reference sound sources; status code is 9599; successor is ISO 6926:1999; withdrawn / published date is 1990-10-11, recorded from its source on 2026-08-05. - **Identifier:** ISO 6926:1990 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Determination of sound power levels of noise sources — Requirements for the performance and calibration of reference sound sources _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6926:1999 - **Withdrawn / published date:** 1990-10-11 _(verified: appears in the quote below)_ ## What the source says > 13443,IS,,ISO 6926:1990,Acoustics — Determination of sound power levels of noise sources — Requirements for the performance and calibration of reference sound sources,Acoustique — Détermination des niveaux de puissance acoustique émis par les sources de bruit — Prescriptions relatives aux performances et à l'étalonnage des sources sonores de référence,1990-10-11,1,['17.140.01'],ISO/TC 43/SC 1,9599,,[24013],"['en','fr']",6, ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).